diff options
| -rw-r--r-- | services/audioflinger/AudioFlinger.cpp | 19 | ||||
| -rw-r--r-- | services/audioflinger/AudioFlinger.h | 3 |
2 files changed, 14 insertions, 8 deletions
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp index aea31a8..e9ac3f9 100644 --- a/services/audioflinger/AudioFlinger.cpp +++ b/services/audioflinger/AudioFlinger.cpp @@ -1816,6 +1816,18 @@ audio_stream_t* AudioFlinger::PlaybackThread::stream() return &mOutput->stream->common; } +uint32_t AudioFlinger::PlaybackThread::activeSleepTimeUs() +{ + // A2DP output latency is not due only to buffering capacity. It also reflects encoding, + // decoding and transfer time. So sleeping for half of the latency would likely cause + // underruns + if (audio_is_a2dp_device((audio_devices_t)mDevice)) { + return (uint32_t)((uint32_t)((mFrameCount * 1000) / mSampleRate) * 1000); + } else { + return (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; + } +} + // ---------------------------------------------------------------------------- AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device) @@ -2422,11 +2434,6 @@ status_t AudioFlinger::MixerThread::dumpInternals(int fd, const Vector<String16> return NO_ERROR; } -uint32_t AudioFlinger::MixerThread::activeSleepTimeUs() -{ - return (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; -} - uint32_t AudioFlinger::MixerThread::idleSleepTimeUs() { return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2; @@ -2893,7 +2900,7 @@ uint32_t AudioFlinger::DirectOutputThread::activeSleepTimeUs() { uint32_t time; if (audio_is_linear_pcm(mFormat)) { - time = (uint32_t)(mOutput->stream->get_latency(mOutput->stream) * 1000) / 2; + time = PlaybackThread::activeSleepTimeUs(); } else { time = 10000; } diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h index 897bc78..6cafa7e 100644 --- a/services/audioflinger/AudioFlinger.h +++ b/services/audioflinger/AudioFlinger.h @@ -776,7 +776,7 @@ private: virtual int getTrackName_l() = 0; virtual void deleteTrackName_l(int name) = 0; - virtual uint32_t activeSleepTimeUs() = 0; + virtual uint32_t activeSleepTimeUs(); virtual uint32_t idleSleepTimeUs() = 0; virtual uint32_t suspendSleepTimeUs() = 0; @@ -833,7 +833,6 @@ private: Vector< sp<Track> > *tracksToRemove); virtual int getTrackName_l(); virtual void deleteTrackName_l(int name); - virtual uint32_t activeSleepTimeUs(); virtual uint32_t idleSleepTimeUs(); virtual uint32_t suspendSleepTimeUs(); |